package com.flyme.module.base.provider.qrcode;

import java.awt.Color;
import java.awt.Font;
import java.awt.Graphics2D;
import java.awt.image.BufferedImage;
import java.io.ByteArrayInputStream;
import java.io.ByteArrayOutputStream;
import java.io.File;
import java.util.HashMap;
import java.util.Map;

import javax.imageio.ImageIO;

import cn.hutool.core.codec.Base64;
import com.flyme.common.core.utils.ObjectUtils;
import com.google.zxing.BarcodeFormat;
import com.google.zxing.EncodeHintType;
import com.google.zxing.MultiFormatWriter;
import com.google.zxing.WriterException;
import com.google.zxing.common.BitMatrix;
import com.google.zxing.qrcode.decoder.ErrorCorrectionLevel;

/** 二维码 */
public class ZXingCode {
	private static final int QRCOLOR = 0xFF000000; // 默认是黑色
	private static final int BGWHITE = 0xFFFFFFFF; // 背景颜色

	public static void main(String[] args) throws WriterException {
		try {

			getLogoQRCode("sdfs", null, "跳转到百度的二维码");
		} catch (Exception e) {
			e.printStackTrace();
		}
	}

	/** * 生成带logo的二维码图片 */
	public static String getLogoQRCode(String content, String logoPath, String productName) {
		try {
			ZXingCode zp = new ZXingCode();
			BufferedImage bim = zp.getQR_CODEBufferedImage(content, BarcodeFormat.QR_CODE, 400, 400, zp.getDecodeHintType());
			File logoFile = null;
			if (ObjectUtils.isNotEmpty(logoPath)) {
				logoFile = new File(logoPath);
			}
			return zp.addLogo_QRCode(bim, logoFile, new LogoConfig(), productName);
		} catch (Exception e) {
			e.printStackTrace();
		}
		return null;
	}

	/** * 生成带logo的二维码图片 */
	public static String getQrcode(String content, byte[] file, String productName) {
		try {
			ZXingCode zp = new ZXingCode();
			BufferedImage bim = zp.getQR_CODEBufferedImage(content, BarcodeFormat.QR_CODE, 400, 400, zp.getDecodeHintType());
			return zp.addLogo_QRCode(bim, file, new LogoConfig(), productName);
		} catch (Exception e) {
			e.printStackTrace();
		}
		return null;
	}

	/** * 给二维码图片添加Logo */
	public String addLogo_QRCode(BufferedImage bim, byte[] logoPic, LogoConfig logoConfig, String productName) {
		try {
			/** * 读取二维码图片，并构建绘图对象 */
			BufferedImage image = bim;
			if (logoPic != null ) {
				Graphics2D g = image.createGraphics();

				/** * 读取Logo图片 */
				BufferedImage logo = ImageIO.read(new ByteArrayInputStream(logoPic));
				/** * 设置logo的大小,本人设置为二维码图片的20%,因为过大会盖掉二维码 */
				int widthLogo = logo.getWidth(null) > image.getWidth() * 3 / 10 ? (image.getWidth() * 3 / 10) : logo.getWidth(null), heightLogo = logo.getHeight(null) > image.getHeight() * 3 / 10 ? (image.getHeight() * 3 / 10) : logo.getWidth(null);

				/** * logo放在中心 */
				int x = (image.getWidth() - widthLogo) / 2;
				int y = (image.getHeight() - heightLogo) / 2;
				/**
				 * * logo放在右下角 * int x = (image.getWidth() - widthLogo); * int y
				 * = (image.getHeight() - heightLogo);
				 */

				// 开始绘制图片
				g.drawImage(logo, x, y, widthLogo, heightLogo, null);
				// g.drawRoundRect(x, y, widthLogo, heightLogo, 15, 15);
				// g.setStroke(new BasicStroke(logoConfig.getBorder()));
				// g.setColor(logoConfig.getBorderColor());
				// g.drawRect(x, y, widthLogo, heightLogo);
				g.dispose();
				logo.flush();
			}

			// 把商品名称添加上去，商品名称不要太长哦，这里最多支持两行。太长就会自动截取啦
			if (productName != null && !productName.equals("")) {
				// 新的图片，把带logo的二维码下面加上文字
				BufferedImage outImage = new BufferedImage(400, 445, BufferedImage.TYPE_4BYTE_ABGR);
				Graphics2D outg = outImage.createGraphics();
				// 画二维码到新的面板
				outg.drawImage(image, 0, 0, image.getWidth(), image.getHeight(), null);
				// 画文字到新的面板
				outg.setColor(Color.BLACK);
				outg.setFont(new Font("宋体", Font.BOLD, 30)); // 字体、字型、字号
				int strWidth = outg.getFontMetrics().stringWidth(productName);
				if (strWidth > 399) {
					// //长度过长就截取前面部分
					// outg.drawString(productName, 0, image.getHeight() +
					// (outImage.getHeight() - image.getHeight())/2 + 5 ); //画文字
					// 长度过长就换行
					String productName1 = productName.substring(0, productName.length() / 2);
					String productName2 = productName.substring(productName.length() / 2, productName.length());
					int strWidth1 = outg.getFontMetrics().stringWidth(productName1);
					int strWidth2 = outg.getFontMetrics().stringWidth(productName2);
					outg.drawString(productName1, 200 - strWidth1 / 2, image.getHeight() + (outImage.getHeight() - image.getHeight()) / 2 + 12);
					BufferedImage outImage2 = new BufferedImage(400, 485, BufferedImage.TYPE_4BYTE_ABGR);
					Graphics2D outg2 = outImage2.createGraphics();
					outg2.drawImage(outImage, 0, 0, outImage.getWidth(), outImage.getHeight(), null);
					outg2.setColor(Color.BLACK);
					outg2.setFont(new Font("宋体", Font.BOLD, 30)); // 字体、字型、字号
					outg2.drawString(productName2, 200 - strWidth2 / 2, outImage.getHeight() + (outImage2.getHeight() - outImage.getHeight()) / 2 + 5);
					outg2.dispose();
					outImage2.flush();
					outImage = outImage2;
				} else {
					outg.drawString(productName, 200 - strWidth / 2, image.getHeight() + (outImage.getHeight() - image.getHeight()) / 2 + 12); // 画文字
				}
				outg.dispose();
				outImage.flush();
				image = outImage;
			}

			image.flush();
			ByteArrayOutputStream baos = new ByteArrayOutputStream();
			baos.flush();
			ImageIO.write(image, "png", baos);

			// 二维码生成的路径，但是实际项目中，我们是把这生成的二维码显示到界面上的，因此下面的折行代码可以注释掉
			// 可以看到这个方法最终返回的是这个二维码的imageBase64字符串
			// 前端用 <img src="data:image/png;base64,${imageBase64QRCode}"/>
			// 其中${imageBase64QRCode}对应二维码的imageBase64字符串
			ImageIO.write(image, "png", new File("D:/TDC-"  + "test.png"));

			String imageBase64QRCode = Base64.encode(baos.toByteArray());
			baos.close();
			return imageBase64QRCode;
		} catch (Exception e) {
			e.printStackTrace();
		}
		return null;
	}

	/** * 给二维码图片添加Logo */
	public String addLogo_QRCode(BufferedImage bim, File logoPic, LogoConfig logoConfig, String productName) {
		try {
			/** * 读取二维码图片，并构建绘图对象 */
			BufferedImage image = bim;
			if (logoPic != null && logoPic.exists()) {
				Graphics2D g = image.createGraphics();

				/** * 读取Logo图片 */
				BufferedImage logo = ImageIO.read(logoPic);
				/** * 设置logo的大小,本人设置为二维码图片的20%,因为过大会盖掉二维码 */
				int widthLogo = logo.getWidth(null) > image.getWidth() * 3 / 10 ? (image.getWidth() * 3 / 10) : logo.getWidth(null), heightLogo = logo.getHeight(null) > image.getHeight() * 3 / 10 ? (image.getHeight() * 3 / 10) : logo.getWidth(null);

				/** * logo放在中心 */
				int x = (image.getWidth() - widthLogo) / 2;
				int y = (image.getHeight() - heightLogo) / 2;
				/**
				 * * logo放在右下角 * int x = (image.getWidth() - widthLogo); * int y
				 * = (image.getHeight() - heightLogo);
				 */

				// 开始绘制图片
				g.drawImage(logo, x, y, widthLogo, heightLogo, null);
				// g.drawRoundRect(x, y, widthLogo, heightLogo, 15, 15);
				// g.setStroke(new BasicStroke(logoConfig.getBorder()));
				// g.setColor(logoConfig.getBorderColor());
				// g.drawRect(x, y, widthLogo, heightLogo);
				g.dispose();
				logo.flush();
			}

			// 把商品名称添加上去，商品名称不要太长哦，这里最多支持两行。太长就会自动截取啦
			if (productName != null && !productName.equals("")) {
				// 新的图片，把带logo的二维码下面加上文字
				BufferedImage outImage = new BufferedImage(400, 445, BufferedImage.TYPE_4BYTE_ABGR);
				Graphics2D outg = outImage.createGraphics();
				// 画二维码到新的面板
				outg.drawImage(image, 0, 0, image.getWidth(), image.getHeight(), null);
				// 画文字到新的面板
				outg.setColor(Color.BLACK);
				outg.setFont(new Font("宋体", Font.BOLD, 30)); // 字体、字型、字号
				int strWidth = outg.getFontMetrics().stringWidth(productName);
				if (strWidth > 399) {
					// //长度过长就截取前面部分
					// outg.drawString(productName, 0, image.getHeight() +
					// (outImage.getHeight() - image.getHeight())/2 + 5 ); //画文字
					// 长度过长就换行
					String productName1 = productName.substring(0, productName.length() / 2);
					String productName2 = productName.substring(productName.length() / 2, productName.length());
					int strWidth1 = outg.getFontMetrics().stringWidth(productName1);
					int strWidth2 = outg.getFontMetrics().stringWidth(productName2);
					outg.drawString(productName1, 200 - strWidth1 / 2, image.getHeight() + (outImage.getHeight() - image.getHeight()) / 2 + 12);
					BufferedImage outImage2 = new BufferedImage(400, 485, BufferedImage.TYPE_4BYTE_ABGR);
					Graphics2D outg2 = outImage2.createGraphics();
					outg2.drawImage(outImage, 0, 0, outImage.getWidth(), outImage.getHeight(), null);
					outg2.setColor(Color.BLACK);
					outg2.setFont(new Font("宋体", Font.BOLD, 30)); // 字体、字型、字号
					outg2.drawString(productName2, 200 - strWidth2 / 2, outImage.getHeight() + (outImage2.getHeight() - outImage.getHeight()) / 2 + 5);
					outg2.dispose();
					outImage2.flush();
					outImage = outImage2;
				} else {
					outg.drawString(productName, 200 - strWidth / 2, image.getHeight() + (outImage.getHeight() - image.getHeight()) / 2 + 12); // 画文字
				}
				outg.dispose();
				outImage.flush();
				image = outImage;
			}

			image.flush();
			ByteArrayOutputStream baos = new ByteArrayOutputStream();
			baos.flush();
			ImageIO.write(image, "png", baos);

			// 二维码生成的路径，但是实际项目中，我们是把这生成的二维码显示到界面上的，因此下面的折行代码可以注释掉
			// 可以看到这个方法最终返回的是这个二维码的imageBase64字符串
			// 前端用 <img src="data:image/png;base64,${imageBase64QRCode}"/>
			// 其中${imageBase64QRCode}对应二维码的imageBase64字符串
			ImageIO.write(image, "png", new File("D:/TDC-"  + "test.png"));

			String imageBase64QRCode = Base64.encode(baos.toByteArray());
			baos.close();
			return imageBase64QRCode;
		} catch (Exception e) {
			e.printStackTrace();
		}
		return null;
	}

	/** * 构建初始化二维码 * * @param bm * @return */
	public BufferedImage fileToBufferedImage(BitMatrix bm) {
		BufferedImage image = null;
		try {
			int w = bm.getWidth(), h = bm.getHeight();
			image = new BufferedImage(w, h, BufferedImage.TYPE_INT_RGB);

			for (int x = 0; x < w; x++) {
				for (int y = 0; y < h; y++) {
					image.setRGB(x, y, bm.get(x, y) ? 0xFF000000 : 0xFFCCDDEE);
				}
			}

		} catch (Exception e) {
			e.printStackTrace();
		}
		return image;
	}

	/**
	 * * 生成二维码bufferedImage图片 * * @param content * 编码内容 * @param barcodeFormat *
	 * 编码类型 * @param width * 图片宽度 * @param height * 图片高度 * @param hints * 设置参数
	 * * @return
	 */
	public BufferedImage getQR_CODEBufferedImage(String content, BarcodeFormat barcodeFormat, int width, int height, Map<EncodeHintType, ?> hints) {
		MultiFormatWriter multiFormatWriter = null;
		BitMatrix bm = null;
		BufferedImage image = null;
		try {
			multiFormatWriter = new MultiFormatWriter();
			// 参数顺序分别为：编码内容，编码类型，生成图片宽度，生成图片高度，设置参数
			bm = multiFormatWriter.encode(content, barcodeFormat, width, height, hints);
			int w = bm.getWidth();
			int h = bm.getHeight();
			image = new BufferedImage(w, h, BufferedImage.TYPE_INT_RGB);

			// 开始利用二维码数据创建Bitmap图片，分别设为黑（0xFFFFFFFF）白（0xFF000000）两色
			for (int x = 0; x < w; x++) {
				for (int y = 0; y < h; y++) {
					image.setRGB(x, y, bm.get(x, y) ? QRCOLOR : BGWHITE);
				}
			}
		} catch (WriterException e) {
			e.printStackTrace();
		}
		return image;
	}

	/** * 设置二维码的格式参数 * * @return */
	@SuppressWarnings("deprecation")
	public Map<EncodeHintType, Object> getDecodeHintType() {
		// 用于设置QR二维码参数
		Map<EncodeHintType, Object> hints = new HashMap<EncodeHintType, Object>();
		// 设置QR二维码的纠错级别（H为最高级别）具体级别信息
		hints.put(EncodeHintType.ERROR_CORRECTION, ErrorCorrectionLevel.H);
		// 设置编码方式
		hints.put(EncodeHintType.CHARACTER_SET, "utf-8");
		hints.put(EncodeHintType.MARGIN, 0);
		hints.put(EncodeHintType.MAX_SIZE, 400);
		hints.put(EncodeHintType.MIN_SIZE, 400);

		return hints;
	}
}
